Added more ATerm/ROSE support (demonstration of ATerm API used for operations on ROSE AST, phase 1).
Added initial phase of token support for unparser (and fixed previous violation of unused header policy).
Added initial phase of token support for unparser (and fixed previous violation of unused header policy).
Added initial phase of token support for unparser (and fixed previous violation of unused header policy, again).
Added CMake support for new file.
Added more of token support for unparser (now generating proper SgTokens and list is now attached to SgSourceFile, token subsequence map to statements is computed, but not yet attached to SgSourceFile).
Merge remote-tracking branch 'origin/master' into HEAD